Zealot S66M RGB Rhythmic Light Karaoke Wireless Speaker Parameters: 1. Bluetooth version: 5.2 2. Transmission distance: 10m 3. Battery capacity: 3600mAh 4. Charging time: 5.5 hours 5. TF card playback: 2 hours 6. Standby time: about 30 days 7. Horn specification: 77mm 8. Frequency response: 20Hz-20KHz 9. Signal to noise ratio: not less than 85dB 10. Distortion: less than 1% 11. Charging voltage: DC 5V 12. Working voltage: 3.7V 13. Waterproof level: IPX5 14. Size: 122x122x156mm 15. Function: support Bluetooth TF card U disk AUX TWS interconnection Features: 1. Using high-power speaker + bass diaphragm design, the sound is thick and textured 2. 360-degree shocking surround sound effect, experience as if you were on the scene 3. Built-in noise-canceling microphone, high-definition hands-free calling, free your hands 4. Cool lighting effect design, a variety of lighting changes, bring you a relaxed and pleasant music atmosphere 5. Built-in 3600mAh battery, to meet the needs of daily use, long-lasting battery life 6. Equipped with one or two 2.4G wireless microphones, you can enjoy karaoke with family and friends Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.